Cell Biology Questions

The main organelle involved in modification and routing of newly synthesized proteins to their destinations is:

At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell?

Protein synthesis in an animal cell occurs:

Which one of the following organisms is not an example of eukaryotic cells?

In eubacteria, a cellular component that resembles eukaryotic cell is:

Peptide synthesis inside a cell takes place in:

Important site for formation of glycoproteins and glycolipids is:

Rough Endoplasmic Reticulum (RER) is primarily involved in the synthesis of:

The solid linear cytoskeletal elements having a diameter of $6\text{nm}$ and made up of a single type of monomer are known as:

A stage in cell division shows nuclear envelope reforming and Golgi complex reforming. Identify the stage:

Which organelle matches correctly with its function?

The Golgi complex plays a major role in:

Meiosis takes place in:

The complex formed by a pair of synapsed homologous chromosomes is called:

A major site for the synthesis of lipids is:

Pigment-containing membranous extensions in some cyanobacteria are:

During gamete formation, the enzyme recombinase participates during:

Nuclear membrane is absent in:

Select the correct statement from the following regarding cell membrane:

What is true about ribosomes?

Given below is the representation of a certain event at a particular stage of a type of cell division. Which stage is this?

Which one of the following does NOT differ in E. coli and Chlamydomonas?

Which of the following structures is not found in prokaryotic cells?

The main organelle involved in modification and routing of newly synthesized proteins to their destinations is :

When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?

A cell organelle containing hydrolytic enzymes is:

Select the wrong statement.

Select the mismatch.

Match the columns and identify the correct option:(a) Thylakoids — (i) Disc-Shaped sacs in Golgi apparatus(b) Cristae — (ii) Condensed structure of DNA(c) Cisternae — (iii) Flat membranous sacs in stroma(d) Chromatin — (iv) Infoldings in mitochondria

Cellular organelles with membranes are:

Which of the following are not membrane-bound?

Which structures perform the function of mitochondria in bacteria?

The enzyme recombinase is required at which stage of meiosis?

Motile bacteria are able to move by:

In the 'S' phase of the cell cycle:

Which one of the following living organisms completely lacks a cell wall?

Match the following and select the correct answer:(a) Centriole — (i) Infoldings in mitochondria(b) Chlorophyll — (ii) Thylakoids(c) Cristae — (iii) Nucleic acids(d) Ribozymes — (iv) Basal body of cilia or flagella

During which phase(s) of the cell cycle does the amount of DNA in a cell remain at $4\text{C}$ level if the initial amount is denoted as $2\text{C}$?

The osmotic expansion of a cell kept in water is chiefly regulated by:

Match the stages of meiosis in Column-I to their characteristic features in Column-II:Column-I: (a) Pachytene, (b) Metaphase I, (c) Diakinesis, (d) ZygoteneColumn-II: (i) Pairing of homologous chromosomes, (ii) Terminalization of chiasmata, (iii) Crossing-over takes place, (iv) Chromosomes align at equatorial plate

Assertion : Mitochondria and chloroplasts are semi-autonomous organelles.Reason : They are formed by division of pre-existing organelles as well as contain DNA but lack protein synthesizing machinery.

A polysome is formed by:

The vacuole in a plant cell:

The overall goal of glycolysis, Krebs cycle and the electron transport system is the formation of:

All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is:

Select the wrong statement from the following:

Which one of the following is not a constituent of cell membrane?

The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated?

Which one of the following mammalian cells is not capable of metabolising glucose to carbon-dioxide aerobically?

Regarding the 'fluid mosaic model', which movement is correct for lipids and proteins?

In which one of the following would you expect to find glyoxysomes?

Three of the following statements regarding cell organelles are correct while one is wrong. Which one is wrong?

Many cells function properly and divide mitotically even though they do not have:

When synapsis is complete all along the chromosome, the cell is said to have entered a stage called:

A cross section at the midpoint of the middle piece of a human sperm will show:

Chlorophyll in chloroplasts is located in :

Centromere is required for :

Ribosomal RNA (rRNA) is actively synthesized in:

The two subunits of a ribosome remain united at a critical level of:

The chemiosmotic coupling hypothesis proposes that ATP is formed because:

There is no $\text{DNA}$ in:

Plasmodesmata are:

Cytoskeleton is made up of:

Stroma in the chloroplasts of higher plants contains:

Middle lamella is composed mainly of:

The plasma membrane consists mainly of:

Which one of the following structures between two adjacent cells is an effective transport pathway?

Which one of the following has its own $\text{DNA}$?

The main arena of various types of activities of a cell is:

Membrane-bound organelles are absent in:

In mitochondria, protons accumulate in the:

Which one of the following is not considered as a part of the endomembrane system?

The figure below shows the structure of a mitochondrion. Select the part correctly matched with its function.